Naturally derived waterproofing agents for aqueous-based personal care products

Abstract

Personal care compositions such as sunscreens, color make-up, lotions and creams which contain an amount of a hydrogenated rosin or resin which provides increased resistance to removal by water of such personal care compositions.

1 . A personal care composition comprising: about 0.1% to about 10.0% by weight of hydrogenated rosin or resin derivative, or a polyterpene resin, a sunscreen agent, water and optionally effective amounts of emollients, opacifiers, fragrances, surfactants, preservatives and other desirable and compatible agents. 
     
     
         2 . A process for making a personal care composition comprising:
 a Obtaining a hydrogenated rosin or resin;   b. Dissolving an amount of a sunscreen agent in the hydrogenated rosin or resin to produce a rosin or resin solvated sunscreen agent; and   c. admixing the rosin or resin solvated sunscreen agent with water and at least one of, emollients, ° pacifiers, fragrances, surfactants, preservatives and other desirable and compatible agents to produce a personal care composition.   
     
     
         3 . A composition according to  claim 1  where the rosin resin is based on hydrogenated wood rosin or hydrogenated gum rosin. 
     
     
         4 . A composition according to  claim 1  where the rosin resin is an ester, or mixtures of esters of two or more alcohols or polyols of hydrogenated wood rosin or hydrogenated gum rosin. 
     
     
         5 . A composition according to  claim 1  where the rosin resin is an ester based on methanol, diethylene glycol, triethylene glycol, propylene glycol, glycerol or pentaerythritol. 
     
     
         6 . A composition according to  claim 1  where the polyterpene resin is based on d-limonene from citrus processing. 
     
     
         7 . A composition according to  claim 1  where the polyterpene resin is based on limonene mixed with either alpha-pinene, beta-pinene, delta-3-carene, myrcene, alpha phellandrene, beta phellandrene, alpha-terpinene, gamma-terpinene, terpinolene or the pyrolysis products of alpha pinene or beta pinene or delta-3-carene or delta-2-carene or mixtures thereof.